Gas governor for typesetting machines



1 July 3,1923, Msww H. W. PARTLOW GAS GOVERNOR FOR TYPESETTING MACHINES Filed Jan. 15 1920 5 Sheets-Sheet l INVENTOR. HOWARI] w. PA Ruovb BY mwxm ATTORNEY.

5 Sheets-Sheet 2 H. W. PARTLOJV Filed Jan. 15 1920 GAS GOVERNOR FOR TYPESETTING MACHINES Jul 3'; I923.

INVENTOR.

HOWARE W PART-MOW @Mfl/ Zm ATTORNEY.

Jill s, 1923.

I I H. W. PARTLOW GAS GOVERNOR FOR TYPESETTING MACHINES Filed Jan. 15, 1920 3 Sheets-Sheet 5 INVENTOR. HOWARD W. PART-140W ATTORNEY.

Patented July 3, i923.

hdtdfidt PATENT @FlFl-filid.

HOWARD W. PAR'ILOW, OF UTICA, NEW YORK.

GAS GOVERNOR FOP. TYPESETTING MACHINES.

Application filed January 15, 1920. Serial No. 351,711.

To all whom it may concern:

Be it known that l, Hownnn W; Piin'rLmv, a citizen of the United States, residing at Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Gas Governors for Typesetting Machines, of which the follow ing is a specification, reference being had therein to the accompanying drawing.

My invention relates to a gas governor V for typesetting machines and I declare the following to be a full, clear, concise and exact description thereof suiiicient to enable anyone skilled in the art to which it uppertains to make and use the same reference being had to the accompanying drawings inwhich like reference characters refer to like parts throughout the specification.

The object of the invention is to provide a device that will automatically regulate the volume of gas passing through certain pipes leading to the burners, whereby to control the flame produced .by said gas in order'to keep a constant temperature within the melting pot and upon the throat and mouth piece of a typesetting machine. Inasmuch, as new lead is being fed continually to said metal pot, which feed tends to lower the temperature of the molten lead in said pot, it is necessary to increase the intensity of the gas flame each time a new piece of lea-d is added to the pot.. Immediately, however, the new piece of lead has been melted in the pot, it is desirable to reduce the intensity of the flame again to normal in order to economize in gas, as well as to keep an even temperature on the molten lead or other metal. Obviously, therefore, a variable flame is desirable in this kind of machines and to control such a flame is one of the objects of the invention.

The object willappear from the drawings in which Fig. 1 is a perspective view of a metal pot, throat and mouth piece of a typesetting machine, showing the gas governors attached thereto;

Fig. 2 is an enlarged detail view, showing a vertical section of the gas governor;

Fig. 3 is an enlarged detail view of a val e casing employed, showing the same in perspective;

Fig. 4. is an enlarged detail view, showing a'fragment of a lever employed;

Fig. 5 is an enlarged detail view of a block and certain levers fulcrumed thereto that is employed;

Fig. 6 is an enlarged plan view of the gas governor casing, showing the cover and inner parts removed;

Fig. 7 is an enlarged detail view, showing a perspective of a rock lever employed;

Fig. 8 is an enlarged detail view, show ing a perspective of. another rock lever employeol;

Fig. 9 is an enlarged perspective view of another lever employed;

Fig. 10 is an enlarged perspective view of a modified form of gas governor employed;

Fig. 11 is a vertical section of the gas governor shown in Fig. 10;

Fig. 12 is an enlarged perspective view of the lever used in Figs. 10'and 11;

Fig. 13 is a detail view of a ball valve and immediate parts employed;

Fig. 14 is an enlarged perspective view of a modified form of rock lever employed;

Fig. 15 is an enlarged perspective view of a modified form of another rock lever employed;

Fig. 16 is an enlarged perspective view of a block employed in Figs. 10 and 11, showing the rock levers of Figs. 14c and 15 assembled thereto and of certain hooks employed;

Fig. 17 is a detail perspective view of a hook employed;

Fig. 18 is a side elevation of the parts shown in Fig. 16;

Fig. 19 is an enlarged perspective view of a block employed;

Fig. is a detail. view, showing a section of a modified form of expansive tube with metallic bar therein that is employed.

Referring more particularly to the drawings, the metal pot of a typesetting machine is represented by 1, and the mouth piece by 2. A hollow metallic expansive tube 3 projects down into the metal pot --1. The upper part of said arm 3 is reduced in diameter and shouldered at l and is surrounded with a very thin metallic sleeve 5 that is separated therefrom by an air space or by asbestos or other nonheat conducting substance 5, whereby the heat of the molten metal will afiect only the lower part of the tube 3, no matter how deep into the molten metal said tube 3 may rest. Although the depth of the molten lead in the pot -1- varies, it never falls below a given depth which will cover the lower part of the tube 3, that is not covered by the sleeve 5, while the typesetting machine is in operation, whereby the exposed surface of the tube 3 will be constant in order to give a constant expansion or contraction of the metal tube 3 for the effective Working of the governor. The tube 3 is made of any material having a high degree of expansibility, whereas the bar 10 is made of a material having very little expansibility. The upper end of the tube 3 is screw threaded to the casing 6 of the governor.

The metallic tube 3 contains a metallic bar 10 that has enlarged ends or heads at 12-12. The upper head 12 of the bar 10 bears against the lugs 13-13 formed integral with the rock levers l4 and 15 which are fulcrumed upon pins l6-16'- having bearings in the hollow block 1'? Said block 17 is fastened to the base of the casing 6 by screws l818.

The rock lever 14 is equipped with a hook 20 that engages the cross shaft 21 having bearings in the sides 22-22 of the bifurcated end of the lever 23. The straightedge 24 of the rock lever 15 bears against the cross shaft 25 having hearings in the lower part of the sides 22, whereby pressure of the head 12 of the bar 10 against the lugs 1313 will rock the upper QHL s of said levers 14 and 15 upon their respective fulcrums away from each other and there by, cause a tilting of the lever 23 in a vertical plane, whereby to elevate the free end or said lever 23 to open the valve 30.

The valve is made in the form of a ball-and is attached to a short rod 31 that has a ball 32 fastened to its upper end. The ball 32 has a loose seat in the counter sunk aperture 33 formed in the end of the lever 23. Said valve 30 is held suspended in the cylindrical recess 35 formed in the adjust-- able valve casing 36 which has cast integral. therewith a tube 37 that is adapted to extend down in a concentric manner within a corresponding passageway 33 made in the casing 6.

The valve casing 36 is held in given position within the chamber formed by the casing 6 by a pin 40 that is mounted in the base of the casing 36and projects upward through an aperture 41 in the valve casing 36 in such manner that said casing 36 can slide up and down thereon.

The recess 35 formed in the casing 36 has a. shoulder at 42. Said recess is larger in diameter than the valve 30, whereas the passage 43 through the tube 37 is substantially the same in diameter as the valve whereby said valve 30 is permitted to enter and slide up and down in the recess 43. When the valve 30 is within the recess 43 it will close the same against the passage of gas therethrough.

The valve casing 36 is actuated vertically in order to adjust the location of the shoul;

der 42 in the recess 35 with reference to the valve 30, whereby to regulate the opening and closing of the valve 30 with reference to the amount of vertical movement of the lever 23, by a screw bolt 45 that has a bearing in the cover 46. Said bolt 45 has a head 4? equipped with peripheral 1ndentations at 43 adapted to be engaged by a wedge shaped lug 49 fastened to the upper end of a spring pawl 50 which is mounted to the cover 46. The lug 49 engages the indentations at 43, wnercby to hold the screw bolt and therefore, valve c.sing 1n given adjusted position. Said valve casing 36 is urged normally downward by a coiled spring 39 that surrounds bolt 45 and bears at one end against the under surface of the cover 46 and at the other against the surface of the valve casing 36, which is provided with a counter sunk recess therefor. Cover 46 is held to casing 6 by bolts The casing 6 has a threaded orifice or port at 51 for connection with a gas pipe that leads to a suitable source of supply. There is also a narrow passageway or con: duit at 53 adapted to permit the flow of a. small volume of gas therethrough and into the passageway at a location just below the disposition of the lower edge of the tube 37 whereby to maintain a pilot light. The opening 54 of the conduit 53 into the pars sageway 38 is controlled by a screw bolt valve 55 that is mounted in a corresponding recess formed in the casing 6. Said valve 55 is provided with a conical end adapted to be seated against a counterpart edge surrounding the opening 54, whereby said opening may be more or less closed by the end of the valve 55 to control the passage of gas to the passageway 38.

Norn'ially the gas will enter the chamber of the casing 6 by way of the port 51 and move down the recess 35 or through ports 35 formed in the valve casing 36 and on into the passageway 38, if the ball valve 30 is in open position. However, a small amount of gas will continue to flow all the time whether the ball valve 30 is in open position or not through the conduit 53 and into the passageway 38, as controlled by the screw valve 55 whereby the light on the burner located below the pot 1 of the typesetting machine will be kept burning at all times, although more or less regulated as to intensity by the movements of the valve 30. The adjustment of casing 36 by screw 45 is limited against seating over the upper end of passage 53 whereby the latter will have uninterrupted communication with the supply of gas.

The lever 23 is guided in its vertical movements by a pin that is fastened to the base of the casing 6 and projects upward through an elongated slot 61. formed in said lever 23.

In operation, the casing 6 is attached to ill) the frame 62-01- the metal pot -1 in such manner that the expansive tube 3 will extend down into the molten metal. As new metal is fed continually to the pot by hand or by some well known mechanism, which fact will lower the degree of temperature of the metal in said pot -1-, the arm 3 under the influence or a lower temperature will temporarily contract and thereby reduce the size of chamber therewithin. This contraction will actuate the bar 10, located in said chamber, in such manner that the head 12 adjacent the lugs 13 of the rock levers 14 and 15 will force said lugs upward, thereby effecting the rotation of the rock levers 14 and 15 upon their fulcrums 16. This rotation o'f'thc levers 1 1 and 15 will cause the upper parts thereof to move away from each other, so that the hook of the lever 14 will exert a pull on the cross shaft 21 of the lever 23 andthe straight edge 24 of the lever 15 will exert a push upon the other cross shaft 25, whereby to effect a resultant movement of the lever 23 that will elevate the end thereof holding the ball 32-, which is connected to the valve by a rod 31, thereby opening said valve 30 and permitting the flow of a greater volume of gas to intensify the flame of the burner under the metal pot 1. Immediately the temperature of the pot -1- again reaches normal, the reverse movements of said parts will take place, thereby closing to a more or less degree the valve 30.

The vertical movements of the lever 23,

whereby to efiect the opening and closing f the valve 30 can be adjusted by turning the head a? of the bolt l5, to actuate the valve casing 36 with reference to the position of the valve 30 in order to bring the shoulder 42 moreor less near to the valve 30. F or this purpose, the head 47 has a graduated scale marked thereon to indicate the; degree of turning desired to conform the valve opening to the temperature normally maintained in the metal pot 1. It will be understood that difi'erent work requires difierent temperatures in order to produce the best results.

Figs. 10 to 20 inclusive, there is shown a gas governor constructed substantially similar to the one hereinabove described except that certain parts are modified in form, whereby to conform said governor for use immediatelyunder the mouth piece 2 of the typesetting machine. This construction has a hollow metallic tube that is screw threaded to the casing 71 of the governor and adapted to rest in horizontal position in an. apertere usually formed in the general contsruction of typesetting machines immediately below the mouth piece 2 of said machine. The hollow tube 70 con tains a removable bar 74- that has enlarged ends or heads at 7575. One of said heads 75 is adapted to lie adjacent the projecting lugs iii-76 formed on the rock levers 77 and 78 respectively. Said levers 77 and 78 are fulcrumed at 80 and 81 respectively to the block 82 that is held in place to the easing 71 by screw bolts. The block 82 is equipped with recesses Set and 85 for the re ception of the lugs 7(3 76 which ply therein.

Hooks S6 and 87 are pivotally secured to the rock levers 77 and 78 and are adapted to engage the cross bars 88 and 89 respectively having bearings in the bifurcated sides 90-90 of the lever 91. Said lever 91 controls the movements of the ball valve 92 that operates in the valve casing 93, as heretofore explained with reference to ball valve 30. The valve casing 93 has formed integral therewith a depending tube 9 1- that is adapted to be housed in a correspondingly firmed passageway 95 made in the casing l A narrow conduit 96 controlled by a valve 97 is intended to permit a small volume of gas to enter the passageway 95 just below the location of the lowermost edge of the tube 94, as controlled by the valve 97, whether the ball valve 92 is in open or closed position, whereby there will be sulficient vol ume of gas to maintain a pilot light for keeping the burner lighted at all times, although more or less regulated, as to intensity by the movement of the ball valve 92.

The valve casing 93 is adjustedvertically by a screw bolt 102 which engages a threaded orifice made in said valve casing. The casing 93 is held down normally by a coiled spring 103 surrounds bolt 102 and that bears at its upper end against the cover 104 and at its lower end against the lower surface of a counter sunk recess formed in said cas ing 93. Said cover 10 1- is held to the casing 71 by screw bolts 105. i

A threaded aperture at 98 is adapted for the mounting of a pipe leading to some suitable source of supply. The passageway 95 is connected to a gas pipe 99 that leads to the pipes 100 and 101 which carry gas to the burners located immediately below the throat and the mouth piece 2 of the typesetting machine, whereas the passageway 38 of the former construction is connected to a pipe 106 that conducts gas to the burner located immediately below the pot -1-. There is no connection, however, between the pipe 106 and the pipes 100 and 101.

The gas governor herein just above described is actuated, whereby to control the volume of gas to the throat and mouth piece 2 ot the typesetting machine by the contraction and expansion of tube 70 as effected by the heat of the biiirner under the mouth piece 2, or in other words the contraction of the tube 70 due to a lower degree of temperature will cause the valve 92 to open and increase the volume of gas whereas, an expansion of the tube 70, due to a highe degree of temperature will cause the valve 92 to close and, thereby, decrease the volume of gas to the throat and mouth piece burners.

The bifurcated end of the lever 23 is split at 110 and equipped with a screw bolt 111 that engages a threaded aperture in the lower part 112 of said lever 23. whereby to draw the lower part 112 towards the upper part 113, There is also a screw bolt 11% that engages a threaded aperture in the upper part 113 of said lever 23 and adapted to bear against the lower part 112, whereby to separate said. parts 112 and 113. The adjustment of said screw bolts 111 and 114: can be effected to more or less separate the cross shafts 21 and 25, which are located respectively in said parts, whereby to govern the velocity and degree of movement of said lever 23 upon said shafts 21 and 25 as a fulcrum. This adjustment of the screw bolts 111 and 114 is desirable in order to conform the velocity and degree of movement of the lever 23 with the reading of any thermometer, as indicated by the graduated scale marked upon the head 17 of the bolt The valve casing 36 is provided with apertures 35 that admit gas to the aperture 85 thereof.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a gas governor for typesetting machines, a valve, a lever connected with said valve, rock levers for actuating said first named lever, a thermostatic bar adapted to make contact with said rock levers to actuate the same, and means carried by the first lever to vary the movement of the latter by the rock levers.

2. In a gas governor for typesetting machines, a valve, a lever connected with said valve, rock levers for actuating said. first named lover, a bar adapted to make contact with said rock levers, a tube for actuating said bar, whereby to govern the flow of gas through said valve, and means for governing the velocity and degree of movement of said first lever.

3. In a gas governor for typesetting machines, a valve, a lever connected with said valve, rock levers for actuating said first named lever. means for actuating said rock levers, a fixed guide, a valve casing engaged with the guide and mounted to co-operate with said valve, means between the guide and seat and ad justably engaged with the valve casing for adjusting said valve easing with reference to said valve, whereby to control the volume of gas passing through said valve, and means connected with said last named means for indicating the amount of movement of said casing.

4. In a gas governor for typesetting machines, a valve a lever connected with said valve and having separable parts, rock levers engaged respectively with the parts for actuating the first lever, a thermostatic ele ment for contacting with said levers, and means for adjustably spacing said lever parts to vary the movement of said first lever by said rock lever.

5. In a gas governor for typesetting machines, a valve formed in the shape of a ball, a lever, a rod freely suspending said valve, rock levers for actuating said first named lever, expansive means for actuating said rock levers, a valve casing, a screw bolt threaded into said valve casing for adjusting the same with reference to said valve, whereby to govern the volume of gas passing through said valve casing, and a spring for urging said valve casing normally downward in one direction of adjustment.

6. In a gas governor for typesetting machines, a casing, a valve located within said casing, a lever for actuating said valve, a valve casing adapted to co-operate with said valve, means for actuating said lever, whereby to control the movements of said valve, and a pilot conduit in said first named casing leading from a point beneath the valve casing to be protected thereby, whereby to permit the passage of gas at all times to maintain a pilot light.

7; In a gas governor for typesetting machines, a casing having an outlet, a valve located within said casing, a lever for controlling the movements of said valve, rock levers for actuating said first named lever, expansive means for actuating said rocl: levers, a valve casing slidable in the first cas ing outlet'and having an enlarged part within the casing, screw means for adjusting the position of said valve casing with reference to said valve, and pins fastened to said first named casing and slidably engaging the valve casing and first named lever to guide the movements of said valve casing and said first named lever, said screw means and pin engaged with said enlarged part of the valve casing.

8. In a gas governor for typesetting machines, a valve, an adjustable valve casing adapted to co-operate with said valve, a lever connected at one end to said valve in and having its opposite end split, rock levers for respectively engaging the split portions of the lever to actuate the same, expansive means for moving said rock levers, and screw means for varying the relation of the divided portion of said split end of the lever, whereby to govern the velocity and extent of movement of said first named lever.

9. In a gas governor for typesetting mschines, a valve, a lever adapted to hold said valve in suspended position, rock levers for actuating the first named lever, expansive means for moving said rock levers, said first named lever being split, one rock lever engaging a respective split portion, and screws for adjusting the split end portions of said lever for varying the space between the points of engagement of the rock levers with the split portions, whereby to govern the velocity and extent of movement of said lever.

10. A thermostatic governor including an expansible member adapted to be subjected to the heat of the element to be governed, a heater for the element, means for controlling the heater comprising a cantilever provided with spaced fulcrums by which said lever is pivotally supported, and a pair of oppositely movable cranks each engaging one of said fulcrums and each crank being in frictional engagement with said eXpansible member.

11. A thermostatic governor including a heat-expansible member, a heater, means for controlling said heater from the expansible member, including a lever, a shut-off element controlled thereby, and a leverage system interposed between the expansible member and the lever and freely engaged with and constituting the sole support for the latter.

12. A thermostatic governor comprising a heater-controlling member, a heat-expansible member, a lever for operating the first member, and a pair of levers interposed between the first lever and the expansible member and each directly engaging the same and cooperatively forming the sole support therefor.

13. A thermostatic governor comprising a heater-controlling member, a heat-expansible member, a lever for operating the first member, a pair of levers directly engaged at one end by the second member and having the opposite end providing separable remote portions, one of said remote portions having a flat bearing surface and the other remote portion having an oppositely facing bearing, and pivot projections on the first lever engaging the respective bearings of said remote portions.

14. A thermostatic governor comprising a heater-controlling member, a heat-expansible member, a lever for operating the first member, a pair of rock levers directly engaged at one end by the second member at points between their pivotal mountings, said rock levers having their opposite ends formed with oppositely facing bearings, and means carried by the first lever and engaged with said spaced bearings for supporting the first lever therefrom.

15. A thermostatic governor comprising a heater-controlling member, a heat-expansible member, a lever for operating the first member, a pair of rock levers directly engaged at one end by the second member at points between their pivotal mountings, said rock levers having their opposite ends formed with oppositely facing bearings, pivotal parts on the first lever engaged with the bearings, and means for adjusting the engagement between said parts and bearings.

16. A thermostatic governor comprising a heater-controlling member, a heat-expansible member, a lever for operating the first member, a pair of rock levers directly engaged at one end by the second member at points between their pivotal mountings, said rock levers having their opposite ends formed with oppositely facing bearings, pivotal parts on the first lever engaged with the bearings, and means for adjusting the spacing apart of said pivotal parts.

In testimony whereof I have afixed my signature.

HOWARD W. PARTLON. 

